function tuodongObj(){

  var tuodongObj = new Object;

    tuodongObj.width_init;
    tuodongObj.width_add;
    tuodongObj.width_kg;
    tuodongObj.clientX;
    tuodongObj.clientX_kg = false;

    tuodongObj.huadong = function(obj){

        $(document).mousemove(function(event){

           var Event = event || window.event;


                      var obj_left = obj.css('width').replace('px','');

                       if(obj_left < 20){

                          obj.css('width','24px');

                          $(document).unbind('mousemove');
                          return false;
                       }


                       if(!tuodongObj.width_kg){

                         tuodongObj.width_init = Event.clientX;
                         tuodongObj.width_kg = true;

                       }



                      var left = Event.clientX-tuodongObj.clientX-35;

                       if(left<0){
                          left = 0;
                       }

                       tuodongObj.width_add = Event.clientX-tuodongObj.width_init;

                       var objpp = obj.parent().parent();
                       var objpp_l = Math.abs(objpp.get(0).style.left.replace('px',''));



                       obj.css('width',tuodongObj.width_add+objpp_l+30+'px');

                   if(Event.button == 1){

                       //返回false关闭禁用拖动,针对ie
                       return false;
                   }

        });

        obj.mouseup(function(){

                $(document).unbind('mousemove');


         });
   }




  tuodongObj._create = function(data){

      var obj         =  data.obj;
      var widt_jtou   =  data.widt_jtou;
      var heig_jtou   =  data.heig_jtou;
      var bg_jtou     =  data.bg_jtou;

      var thisObj = $('<div>').attr('class','jiantou').css('position','absolute').css('height',heig_jtou).css('width',widt_jtou).css('left','50%').css('background',bg_jtou);

          obj.css('position','relative').append(thisObj);

          return thisObj;

  }





return tuodongObj;
}